1. Used in the production of paper and cellulose pulp;
2. Used in the production of soap, synthetic detergent, synthetic fatty acid and the refining of animal and vegetable oils.
3. It can be used as desizing agent, scouring agent and mercerizing agent for cotton cloth in textile printing and dyeing industry.
4. The chemical industry is used to produce borax, sodium cyanide, formic acid, oxalic acid, phenol, etc.
5. The petroleum industry is used for refining petroleum products and used in oilfield drilling mud. It is also used in the surface treatment of aluminum oxide, metallic zinc and metallic copper, as well as in glass, enamel, tanning, medicine, dyes and pesticides.
6. Food-grade products are used as acid neutralizers in the food industry, as peeling agents for citrus, peaches, etc., as well as detergents for containers such as empty bottles and cans, as well as decolorants and deodorants.
7. It can also be used as alkaline desiccant. Caustic soda is widely used in the national economy, and many industrial sectors need it. The sector that uses the most caustic soda is the manufacture of chemicals, followed by papermaking, aluminum smelting, tungsten smelting, rayon, artificial cotton and soap manufacturing. In addition, in the production of dyes, plastics, pharmaceuticals and organic intermediates, the regeneration of old rubber, the electrolysis of sodium metal and water, and the production of inorganic salts, the production of borax, chromium salts, manganese salts, phosphates, etc., must also be used A lot of caustic soda.